TTiny Task Tools

Developer · free local utility

Base64 Encoder & Decoder

Convert Unicode text to standard Base64 and decode standard Base64 back to strict UTF-8 text.

Use the tool

Paste text or Base64, then choose the direction. Whitespace inside Base64 input is ignored.

Worked example

See the input and expected result

Example input
hello 世界
Expected result
aGVsbG8g5LiW55WM
How it works

Get a useful result in three steps

  1. Paste UTF-8 text or a standard Base64 value.
  2. Choose Encode UTF-8 or Decode UTF-8.
  3. Copy the transformed text and verify its intended use.
Accuracy boundary

A focused tool, not an automatic expert

This text utility does not process files or arbitrary binary. JWT uses Base64URL and has a separate claims inspector.

Always verify the result in the system where you will use it. The page intentionally avoids accounts, uploads, and claims that go beyond the calculation it performs.

Questions

Before you use the result

Is Base64 encryption?

No. Anyone can decode it. Do not use Base64 to protect passwords, tokens, or confidential information.

Does it support emoji and Chinese text?

Yes. Plain text is converted through UTF-8 before Base64 encoding and decoded back as strict UTF-8.

Can I decode an image or other binary file?

No. This page is deliberately limited to text. Binary data that is not valid UTF-8 will return an error.

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